#ifndef PREXMLNUMBERHH
#define PREXMLNUMBERHH

#include <iostream>
#include "preXmlQuantity.hh"
#include "ExpatInterface/Element.h"

namespace preXml {

  class Number : public Quantity {
  private:
    double _value;
  public:
    void readFrom(const xml::Element & elt);
    const double value() const { return _value;   };
    void printMeNicelyTo(ostream & os) const;
    operator double() const { return _value; };
    /*
      // Would like to be able to ban these
      operator int() const { 
      assert(string("Dear user.  I am not going to let you cast a perXml::Number to an integer!  Explicitly cast preXml::Number::value() if you must!")==
      string("")); 
      return (int) 21/02/1976; // My birthday!
      };
    */
  };

} // end of preXml namespace

#endif